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RT-SVD03L-EN 79
ReliaTel ™ ™ Test Mode
N No otte e:: See specific service fact(s) to verify test sequence.
Protocol, Modes and Tests
Protocol of Communications
It is possible, though not recommended, to connect
multiple control devices to a ReliaTel
™ system. The
terminal strip is arranged such that simultaneous
connection of ICS communication (Tracker
® , Tracer ®
Summit, VariTrac ® ), mechanical zone sensor module
(ZSM), programmable zone sensor, and a conventional
thermostat is possible. Of course, only one device can
control the unit at a time. Following is a protocol of
communication; if communication fails, the RTRM
seeks the next lower priority level device. If no device is
connected, the unit will not run except during the
“
“T TE ES ST T” ” mode.
• Highest priority - ICS (Tracker ® , Tracer ® Summit,
VariTrac ® , Summit) - Using BAYSENS013, 014, 017
as needed
• Next priority - Programmable Zone Sensor
(BAYSENS019, AYSTAT666, BAYSENS020)
• Next priority - Mechanical ZSM (BAYSENS006-11B,
AYSTAT661-664)
• Least priority - Conventional Thermostat (R, G, Y,
W, C)
It is possible to connect multiple devices. Doing so
increases the chance for error in application and
troubleshooting.
N No otte e:: 27.5 to 50 tons VAV conventional thermostat
inputs do not work and are ignored by the RTRM.
On power up, the RTRM looks for a zone temperature
input (J6-1, J6-2). If it doesn’t see one, it then ignores
zone sensor inputs and looks for thermostat (RGYW)
inputs. However, if the unit does see a valid zone
temperature input on startup then the thermostat
(RGYW) inputs are ignored. A programmable zone
sensor will take priority over either input when
connected, and an ICS system takes the highest
priority.
Service Test Mode
Allows the qualified service technician or installer to
activate all functions of the unit, regardless of
thermostat, sensor, or in some cases ICS input. Test
Mode is activated using either a fixed resistance or a
jumper as explained below.
In Service “ “T TE ES ST T” ” mode, the unit can be operated in
any of several pre-defined operating modes that
exercise all unit functions. The operating modes
include “
“S Su up pp plly y F Fa an n O On n” ”, “ “E Ecco on no om miizze err o op pe en n” ” and
“ “E Ecco on no om miizze err ccllo osse e” ”, “ “C Co oo oll 1 1” ”, “ “C Co oo oll 2 2” ”, “ “C Co oo oll 3 3” ”,
“ “R Re eh he ea att V Va allv ve e” ” (for Staged Dehumidification),
“ “M Mo od du ulla attiin ng g R Re eh he ea att” ” and “ “C Co oo olliin ng g V Va allv ve ess” ”,
“ “R Re eh he ea att C Ciirrccu uiitt P Pu um mp po ou utt S So olle en no oiid d” ”, “ “H He ea att 1 1” ”,
“ “H He ea att 2 2” ”, “ “E Em me errg ge en nccy y H He ea att ” ”(heat pumps only), and
“ “O Ou uttd do oo orr C Co oiill D De effrro osstt” ” (heat pump only). If a unit
does not have a component, such as an economizer,
that test stage is skipped. There are 3 ways to use the
“
“T TE ES ST T” ” mode. In each case, the unit can be running in
any mode or not running at all. Service “ “T TE ES ST T” ” mode
can be initiated any time the unit is powered and an
open condition has been detected on the Test
Terminals at some time since power-up.
Auto-Cycle Test
Place a jumper from TEST 1 to TEST 2. The unit will run
in each mode for 30 seconds, scrolling through all
modes, then exiting the “
“T TE ES ST T” ” mode automatically.
To go through “ “T TE ES ST T” ” mode again, remove and then
restore the jumper. If the jumper is removed at any
time during the “
“T TE ES ST T” ” mode, the unit will stay in the
selected mode for 1 hour (except for the defrost mode
on heat pumps), then revert to normal operation.
Unused states, such as Heat 2 when no Heat 2 is
present, shall be skipped.
Resistance Test
Specific operating states can be selected by applying
an appropriate resistance from TEST 1 to TEST 2.
Operating modes can be changed in any order by
applying the correct resistance values. Operation in any
one mode is limited to 60 minutes as with the jumper
method.
Table 33. Resistance test
Operating Mode
Resistance
1 Indoor fan on 2.2k ohms
2 (a)
Economizer open
3.3k ohms
3 Cool 1 4.7k ohms
4 (a)
Cool 2 6.8k ohms
5 (a) Cool 3 8.2k ohms
5 Heat 1 10k ohms
6 (a) Heat 2 15k ohms
7 (a)
Heat 3 22k ohms
9
(a) Heat 4 27k ohms
8 (b) Defrost cycle/reheat
33k ohms
9 (a) Emergency heat
47k ohms
(a) Optional components
(b) Defrost cycle in test mode runs for at least 1 minute, up to 10
minutes, depending on outdoor ambient and outdoor coil
temperature. Reheat step is valid only with dehumidification option
and will be step 5 of the test.
Step Test
By placing a jumper from TEST 1 to TEST 2 for 2
continuous seconds nominal, allowing the unit to